Stereopticon screen



A. F. VICTOR STEREOPTI CON SCREEN 5 Sheets-Sheet l Filed Feb. l2 1923 Zn@ M b) 4 u EL a @L L M y W c 2 0 M f a June 22 1926. 1,589,493

A. vlcToR l STEREOPTICON SCREEN Filed Feb. 12, 1923 3 Sheets-Sheet 2June 22 192.6'. 1,589,493

A. F. VICTOR sTEREoPTIcoN SCREEN Filed Feb. l2. 1923 3 Sheets-Sheet 5 I'downv below the lower Patented June .22, 1.926.

UNITED STATES msnm 7 Lmnnna Immun vrcfroa, or navmron'r, IowaSTEBEOPTICON SCREEN.

Application led lFebruary 12, 1923. Serial No. 618,882.

My invention relates to stereopticon screens, and itsobject is toprovide a screen that can be lutilized in the daytime as well as at niht, and which can be knocked down I and fol ed into a compact form andtransported from place to place, and easily be set up anywhere for use.This I accomplish by the means hereinafter fully described and asarticularly pointed out in the claims. In t edrawings:

Figure 1 is a perspective view of my 1nvention showing the stereopticcnin place. Figure 2 is a side view of the same folded, and with thestereopticon removed.

VFigure 3 is a longitudinal section taken *on dotted-line 3, 3, Figure4.

Figure 4, is a horizontal section taken on dotted line 4, 4, Figure 3.

Figure 5 is 'a top view of the folded screen, drawn to the same scale asFigures 1 and 2.

Figs. 6 and 7 are sectional details showving respectively the manner ofhinging the shelf at the front of the structure and for il supportingthe arms at Vthe lrear. Fig. 8 is a detail of the lower support for themirror. Fig. 9 is a vertical section on line 9-9 vof-F'g, 10. Fig. 10 isa detail of the upper l suport for the mirror. l0' e ferring to thedrawings A represents a rectangular screen, the side members az, of theframe encll'ng whichA are exten ed down a sucient distance to formthefront" 'fof the 8 sidewalls that have their rear vertimd B, B,represent rec- Y kcal edges `formed with vertical ieces thatareirectangular 'in cross-section t at are-exofthe same,thesamedistanceasthe egslatoV form rear-legs l, 6. The legs b, b, are, pref-.erably, nearer together than thelegs, a, 0% and horizontal section formthe angles `o a" quadrangle ligure. -The lscreen A is formed oftranslucent material that is suit- 46 ably secured ina'rectangular-frame, and the sidewalls are made of wood with'their Vtopand/bottom and rear sides; enclosed in a frame, the lparts of which'are,in crosssec Ltion, of su Stanti'allyxhe saine dimensions legs a., a, oflooking at it from the front of the screen,-is

,. hinged ato' to the surface of vthe left v-hand leg, and the righthand Wall is hinged by a double hinge 8 to the front surface of theright hand leg, substantially as shown in Figure 4 of the drawings.

Wvhen folded theleft hand wall will fold flat against the rear of thescreen, substantially as shown by the dotted line 9, and the right handwall will fold fiat against the front of the screen into the position,shown in Figure 2 of the drawings. l f

At a short distance below the screen and sidewalls, the front legs a areconnected b a cross-bar 11. The rear legs b, have longitudinal rails 13permanently secured thereto, and the forward ends of lthese rails areconnected by hinges, X, similar to 7 and 8 to front legs a, a.

Next the rear legs b, b, bars 13 are loosel connected by a transversestrip 14, the en s of which latter are clamped by a flat springc'lamp15, 15, and held in close contact with bars 13, and this transverse ieceor strip 14 supports the rear vends of tlie rearwardly projectinparallel arms 16, 16, whose forward en s pass under and are hinged to l0cross-bar 11, and project forward beyond-1'` said'bar 1l and areconnected by a transverse shelf 17. When folded upright parallel to thefront le a the arms'may b e maintained thus by ookslandveyes 12, '12..This vshelf is immediately in front of'saidy cross-bar 11 andithas'acouple of guards,

18, 18, that consist` of wedge shaped strips, between whichastereopticon C is placed.

This stereopticon C" ma be of any of the. well known type, althougI'prefer it tobe cylindrical, and whenin position, it. is inclined so asto direct images as shown by dotted line 19 in F' 3 of the drawings,against the center o a mirror reflector 201 Mirror 20, is; preferably,rectangular-,and

is set and secured in an outsidefrectanulol frame of wood ,or metal. Theupper ori,- zontal member 21 9i this reflector 1s hinged to the frontedge of a'transverse'member 22, `the ends of which have studs 23rojecting transversely therefrom, that have ads that f are adapted tocatch behind thel verticalbi-l furcatlons 24 of vthe Asomewhat X-shapedplate 25, the portionAv of which below memv ber 22, is secured b "screws26 or otherwise to the opposing aces' of. the rear l '11,] r near theupper edge -,of the side-wa B. The lower corners ofthe reflectorI 2O areprovided with downwardly pmjecting bi nl furcated plates 27, and thebifurcations of these plates, when the reliector is set in place, aremade to straddle the headed pins or screws, screwedfinto the opposingsurfaces of said legs, at a point slightly above the plane of the lowermembers of the sidewalls.

Member 22 is such width that when the redactor is secured in the mannerstated, it will incline forward from its upper end and will reect anyimage that may be projected thereto from the stereoptic'on, to thecenter of the screen, as shown by dotted line 29 in Figure 3 of thedrawings.

By lifting member 22 so that, first, the studs 23 can be removed frombetween the bifurcations 24C of plate 25, and, second, by lifting theplate 27 of of pins 28, and, third, also by removing the cross-bar 11from between the legs a, and withdrawing the rear ends of the arms 16,16, ofi' of the transverse strip 14, and, finally, by withdrawing saidstrip 14 from under the spring-clamps 15, the sidewalls B can be foldedagainst the screen A in the manner hereinbefore stated. When this isdone the shelf and the cross-bar 11 are folded against the folded screenand sidewalls and the reflector 20 is placed against the same, so as tomake a dat package that can be easily clamped tcigether and transportedfrom place to p ace.

What l claim as new is:

1. A screen structure for stereopticons comprising a. translucent`screen, a frame surrounding the same having its vertical membersextending below the Same to provide legs, sidewalls hinged thereto andextending rearwardly therefrom the rear vertical members of which areextended down wards to provide legs, a reflector at the rear of thescree'ii between said sidewalls Y 2. A screen structure forstereopticonsl comprising a translucent screen, aframe surrounding thesame having its vertlcal members extended below the same to providelegs,

sidewalls hinged thereto and extending rearwardly therefrom the rearvertical members of which are extended downwards to provide legs, areflector at the rear of the screen between said sidewalls, and a shelfbelow the screen lfor supporting the stereopticon which latter isfocused on said screen.

. 3. A screen structure for stereopticons comprising a translucentscreen, a frame surrounding the same having its vertical members'extended below the same to provide legs, sidewalls hinged thereto andextending rearwardly therefrom the rearl vertical members of which areextended downwards to Iprovide legs, a reHector at the rear of thescreen between said sidewalls and a movable shelf below the screen forsupporting the Stereopticon which latter is focused on said screen.

4:. screen structure for Vstereopticons comprising a translucent screen,a frame surrounding the same having its vertical members extended belowthe same to. provide legs, sidewalls hinved thereto and extendingrearwardly therefrom the rear vertical members of which are extendeddownwards to `provide legs, a reflector at the rear of the screen be'-tween said sidewalls, a cross-bar connecting the front legs below thescreen, and a shelf upon which the stereopticon is placed and focusedupon said screen.

5. A screen structure` for stereopticons comprising a translucentscreen, a frame surrounding the same having its vertical membersextended below the same to pro-v vide-front legs, sidewalls hingedthereto and extending rearwardly therefrom whose rear vertical membersare extended downwards to provide rear legs, a reflector at the rear ofthe screen and between said sidewalls, a removable cross-bar connectingthe front legs below the screen, and a shelf having a hinged connectionto said bar upon which the stereopticon is Vplaced and focused upon saidscreen. t

6. A screen structure for stereopticons comprisin a translucent screen,a frame surrounding lie same having its vertical members extended belowthe same to provide front legs, sidewalls hinged thereto and extendingrearwardly therefrom whose rear vertical members are extended downwardsto provide rear legs, a reflector at the rear of the screen and betweensaid sidewalls, a movable cross-bar connecting the front legs below thescreen, longitudinal rails connecting said front legs and said rearlegs, a shelf having a hinged connection to said bar upon which thestereopticon is placed and focused upon said screen, an arm projectingrearwardly from said shelf, a transverse piece resting upon said railsand upon which the rear portions of said arms rest.

7. A screen structure for stereopticons comprising -a translucentscreen, sidewalls hinged thereto .and extending rearwardly' therefrom, atransverse member connecting the rear portions of said sidewalls, a re-Hector the`upper portion of which is connected to Said Vtransversemember, devices to which the lower portions of said reflector isconnected, and means below said screen for supporting the stereopticon,which latter is focused on said screen.'

8. A screen structure for stereopticons comprising a translucent screen,sidewalls hinged thereto and extending rearwardly therefrom, aVtransverse member removably connected to the rear portions of saidsidewalls, a reflector the upper portion of which is hinged to said'transverse member, devices to which the lower part of said reiector isconnected,. and means below said screen cated. plates secured to saidrear legs, pins for supporting the stereopticon which latter projectingfrom the lower portion of said is focused on said screen. reflector thatenter the s ace between said 9. A screen structure for sreo ticonsbifurcations, and means low said screen comprising a translucent screen,si ewalls for supporting the stereopticon which latter ll hinged theretoand extending rearwardly` is focused on said screen. therefrom, atransverse member removably In witness whereof I have hereunto setconnected to the rear portions of said sidemy hand this 6th day of Oct.,1922. walls, a reflector the upper portion of which 10 is'hinged to saidtransverse member, bifur- ALEXANDER FERDINAND VICTOR.

